do not show user/pass for slave unless running with show-slave-auth-info

cleanup of register_slave_on_master()


mysql-test/r/rpl000002.result:
  new output of show slave hosts
sql/mysqld.cc:
  user and password are shown in show slave hosts only if show-slave-auth-info option is on
sql/slave.cc:
  cleanup of register_slave_on_master()
sql/sql_repl.cc:
  do not show user/pass for slave unless running with show-slave-auth-info
sql/sql_repl.h:
  show-slave-auth-info

mysql-test/r/rpl000002.result

@@ -2,8 +2,8 @@ n
 2000
 2001
 2002
-Server_id	Host	User	Password	Port
-2	127.0.0.1	root		9307
+Server_id	Host	Port
+2	127.0.0.1	9307
 id	created
 1	1970-01-01 06:25:45
 id	created

sql/mysqld.cc

@@ -222,7 +222,8 @@ static bool opt_log,opt_update_log,opt_bin_log,opt_slow_log,opt_noacl,
 	    opt_disable_networking=0, opt_bootstrap=0,opt_skip_show_db=0,
             opt_ansi_mode=0,opt_myisam_log=0,
             opt_large_files=sizeof(my_off_t) > 4;
-bool opt_sql_bin_update = 0, opt_log_slave_updates = 0, opt_safe_show_db=0;
+bool opt_sql_bin_update = 0, opt_log_slave_updates = 0, opt_safe_show_db=0,
+  opt_show_slave_auth_info = 0;
 FILE *bootstrap_file=0;
 int segfaulted = 0; // ensure we do not enter SIGSEGV handler twice
 extern MASTER_INFO glob_mi;
@@ -277,7 +278,7 @@ volatile ulong cached_thread_count=0;
 // replication parameters, if master_host is not NULL, we are a slave
 my_string master_user = (char*) "test", master_password = 0, master_host=0,
   master_info_file = (char*) "master.info";
-my_string report_user = (char*) "test", report_password = 0, report_host=0;
+my_string report_user = 0, report_password = 0, report_host=0;
  
 const char *localhost=LOCAL_HOST;
 const char *delayed_user="DELAYED";
@@ -2485,7 +2486,8 @@ enum options {
 	       OPT_GEMINI_FLUSH_LOG, OPT_GEMINI_RECOVER,
                OPT_GEMINI_UNBUFFERED_IO, OPT_SKIP_SAFEMALLOC,
 	       OPT_SKIP_STACK_TRACE, OPT_SKIP_SYMLINKS, OPT_REPORT_HOST,
-	       OPT_REPORT_USER, OPT_REPORT_PASSWORD, OPT_REPORT_PORT
+	       OPT_REPORT_USER, OPT_REPORT_PASSWORD, OPT_REPORT_PORT,
+	       OPT_SHOW_SLAVE_AUTH_INFO
 };
 
 static struct option long_options[] = {
@@ -2604,6 +2606,8 @@ static struct option long_options[] = {
   {"socket",                required_argument, 0, (int) OPT_SOCKET},
   {"server-id",		    required_argument, 0, (int) OPT_SERVER_ID},
   {"set-variable",          required_argument, 0, 'O'},
+  {"show-slave-auth-info",  no_argument,       0,
+     (int) OPT_SHOW_SLAVE_AUTH_INFO},
   {"skip-bdb",              no_argument,       0, (int) OPT_BDB_SKIP},
   {"skip-innodb",           no_argument,       0, (int) OPT_INNODB_SKIP},
   {"skip-gemini",           no_argument,       0, (int) OPT_GEMINI_SKIP},
@@ -3255,6 +3259,9 @@ static void get_options(int argc,char **argv)
       safemalloc_mem_limit = atoi(optarg);
 #endif      
       break;
+    case OPT_SHOW_SLAVE_AUTH_INFO:
+      opt_show_slave_auth_info = 1;
+      break;
     case OPT_SOCKET:
       mysql_unix_port= optarg;
       break;

sql/slave.cc

@@ -580,24 +580,16 @@ int register_slave_on_master(MYSQL* mysql)
   int4store(buf, server_id);
   packet.append(buf, 4);
 
-  len = strlen(report_host);
-  packet.append((char)(uchar)len);
-  packet.append(report_host, len);
-
-  len = strlen(report_user);
-  packet.append((char)(uchar)len);
-  packet.append(report_user, len);
+  net_store_data(&packet, report_host); 
+  if(report_user)
+    net_store_data(&packet, report_user);
+  else
+    packet.append((char)0);
   
   if(report_password)
-  {
-    len = strlen(report_password);
-    packet.append((char)(uchar)len);
-    packet.append(report_password, len);
-  }
+    net_store_data(&packet, report_user);
   else
-  {
     packet.append((char)0);
-  }
 
   int2store(buf, (uint16)report_port);
   packet.append(buf, 2);

sql/sql_repl.cc

@@ -830,8 +830,11 @@ int show_slave_hosts(THD* thd)
   List<Item> field_list;
   field_list.push_back(new Item_empty_string("Server_id", 20));
   field_list.push_back(new Item_empty_string("Host", 20));
+  if(opt_show_slave_auth_info)
+  {
     field_list.push_back(new Item_empty_string("User",20));
     field_list.push_back(new Item_empty_string("Password",20));
+  }
   field_list.push_back(new Item_empty_string("Port",20));
 
   if(send_fields(thd, field_list, 1))
@@ -848,8 +851,11 @@ int show_slave_hosts(THD* thd)
     packet->length(0);
     net_store_data(packet, si->server_id);
     net_store_data(packet, si->host);
+    if(opt_show_slave_auth_info)
+    {
       net_store_data(packet, si->user);
       net_store_data(packet, si->password);
+    }
     net_store_data(packet, (uint)si->port);
     if(my_net_write(net, (char*)packet->ptr(), packet->length()))
     {

sql/sql_repl.h

@@ -12,6 +12,7 @@ typedef struct st_slave_info
   uint16 port;
 } SLAVE_INFO;
 
+extern bool opt_show_slave_auth_info;
 extern HASH slave_list;
 extern char* master_host;
 extern my_string opt_bin_logname, master_info_file;